EP 2429751 B1 20150114 - METHOD AND DEVICE FOR DETERMINING THE VOLTAGE BETWEEN THE ELECTRODES OF A SPOT WELDING GUN
Title (en)
METHOD AND DEVICE FOR DETERMINING THE VOLTAGE BETWEEN THE ELECTRODES OF A SPOT WELDING GUN
Title (de)
VERFAHREN UND VORRICHTUNG ZUM ERMITTELN DER SPANNUNG AN DEN ELEKTRODEN EINER PUNKTSCHWEIßZANGE
Title (fr)
MÉTHODE ET DISPOSITIF DE DÉTERMINATION DE LA TENSION ENTRE LES ÉLECTRODE D'UNE PINCE DE SOUDAGE PAR POINT
Publication
Application
Priority
- AT 2010000164 W 20100512
- AT 7472009 A 20090514
Abstract (en)
[origin: WO2010129982A1] The invention relates to a method and an apparatus for determining the temporal curve of the voltage (ue(t)) at the electrodes (3) of a spot welding gun (1) during a spot welding process as an indicator of the welding quality, wherein the electrodes (3) are fastened to gun arms (2) that can be moved relative to each other, comprising a device (9) for measuring a measuring voltage (um(t)) between the electrodes (3), said measuring device (9) being connected to measuring leads (6) extending along the gun arms (2), and further comprising a bucking coil (7) for measuring a compensating voltage (uk(t)) for compensating for measuring errors in the measuring leads. In order to determine the temporal curve of the voltage (ue(t)) at the electrodes (3) of the spot welding gun (1) during a spot welding process as precisely as possible, the device (9) for measuring the measuring voltage (um(t)) and the device (10) for measuring the compensating voltage (uk(t)) are designed as separate units for separate detection and connected to a device (11) for processing the detected values.
IPC 8 full level
B23K 11/11 (2006.01); B23K 11/25 (2006.01)
CPC (source: EP US)
B23K 11/115 (2013.01 - EP US); B23K 11/258 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
AT 507774 A4 20100815; AT 507774 B1 20100815; EP 2429751 A1 20120321; EP 2429751 B1 20150114; JP 2012526658 A 20121101; JP 6021639 B2 20161109; RU 2011150824 A 20130620; RU 2493944 C2 20130927; US 2012048834 A1 20120301; US 9889520 B2 20180213; WO 2010129982 A1 20101118
DOCDB simple family (application)
AT 7472009 A 20090514; AT 2010000164 W 20100512; EP 10720119 A 20100512; JP 2012510068 A 20100512; RU 2011150824 A 20100512; US 201013319763 A 20100512